Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled (#787)

imgui.cpp

@@ -9094,6 +9094,8 @@ bool ImGui::InputTextEx(const char* label, char* buf, int buf_size, const ImVec2
         // Down the line we should have a cleaner library-wide concept of Selected vs Active.
         g.ActiveIdAllowOverlap = !io.MouseDown[0];
         g.WantTextInputNextFrame = 1;
+        if (flags & ImGuiInputTextFlags_CallbackHistory)
+            g.ActiveIdAllowNavDirFlags &= ~((1 << ImGuiDir_Up) | (1 << ImGuiDir_Down));
 
         // Edit in progress
         const float mouse_x = (io.MousePos.x - frame_bb.Min.x - style.FramePadding.x) + edit_state.ScrollX;